Contingencies (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2020 USD ($) Case	Dec. 31, 2014 USD ($)	Sep. 27, 2020 USD ($) Case
Silica Cases [Member]
Contingencies [Abstract]
Number of pending cases	3		3
Cumulative number of cases dismissed	1,493		1,493
Number of cases dismissed	0
Number of lawsuits settled			1
Asbestos Cases [Member]
Contingencies [Abstract]
Number of pending cases	197		197
Cumulative number of cases dismissed	88		88
Number of new cases filed	26
Number of cases dismissed	5
Number of lawsuits settled			0
Non-AMCOL Asbestos Cases [Member]
Contingencies [Abstract]
Number of cases subject to indemnification	57		57
Number of remaining cases subject to indemnity until dates of exposure	132		132
Number of remaining cases	138		138
Number of remaining cases alleging exposure occurred after initial public offering	6		6
AMCOL Asbestos Cases [Member]
Contingencies [Abstract]
Number of remaining cases with no available indemnity	2		2
Bankruptcy Estate of Novinda [Member]
Contingencies [Abstract]
Damages, interest and costs awarded to Novinda in arbitration | $			$ 9.5
Total litigation expenses | $	$ 11.8		11.8
Litigation expense | $			0.9
Canaan, Connecticut Plant [Member]
Site Contingency [Abstract]
Consent decree paid by US government | $		$ 2.3
Accrued remediation costs | $	0.4		0.4
Adams, Massachusetts Plant [Member]
Site Contingency [Abstract]
Accrued remediation costs | $	0.4		0.4
Adams, Massachusetts Plant [Member] | Minimum [Member]
Site Contingency [Abstract]
Estimated cost of wastewater treatment upgrades | $	6.0		6.0
Adams, Massachusetts Plant [Member] | Maximum [Member]
Site Contingency [Abstract]
Estimated cost of wastewater treatment upgrades | $	$ 8.0		$ 8.0